I'm new to application adapter for SAP in 11g.
I was working on an integration scenario between oracle-ebs and sap using ofmw 11g (11.1.1.4).
When I'm trying to install ofm_adapters_application_generic_11.1.1.4.0 (downloaded from OTN).
When executing/running "iwora11gPS3_application-adapters_win.exe", getting following error:

__"Error while checking for instances an error occurred while trying to manage the selected instance"__

From our experience, we decided to have our server re-imaged and re-installed all the necessary Oracle Suites. We believe something in the registry was preventing us from installing the application adapter. Once we cleaned out our box, everything went well and we were able to install the Application Adapter with no error. This may not be ideal if you are in a production environment, but for development this maybe quick and clean.